Working Theory

The o2 sensor – had been invented by Bosch - is a small sensor screwed into the motorcycle's exhaust system to measure the concentration of oxygen remaining in the exhaust gas to make enable an Electronic Control Unit to control the efficiency of the combustion process in the chambers. In modern bikes, these sensors are attached to the engine's exhaust pipe after the manifold to determine whether the mixture of air and gasoline going into the cylinder is rich or lean. This information is delivered to your Piaggio MP3 250 ie.'s engine management, which adjusts the air fuel mixture to deliver the best possible fuel consumption and lowest possible exhaust emissions.

Restore factory pony and optimum fuel efficacy as if your Piaggio MP3 250 ie. was new from factory.

Bosch patented ceramic technology affords best-in-class performance. The ceramic element is a critical part of the exhaust oxygen sensor. Bosch's patented materials and processes ensure unsurpassed quality and engine performance. Also it sounds reassuringly, major motorcycle manufacturers place their trust in Bosch exhaust o2 sensors. Why replace? Failure of these air fuel sensors, either through normal aging, the use of leaded fuels, or due to fuel contamination with eg. silicones or silicates, can lead to spoiled pony and lower economy.

Compatibility

Our Bosch bike exhaust gas oxygen sensor is available to all bikes fitted with air fuel sensor, torqued in M18 x 1.5mm threaded nut. This oxygen sensor will fit your Piaggio MP3 250 ie. if it is fitted with M18 lambda probe. This sensor doesn’t replace M12 sensors. Not quite sure this oxygen sensor fits your Piaggio MP3 250 ie.? Feel free to contact our Tech Support. Our trained Magnum product specialists are looking forward to respond to your inquiry. Heavy exhaust alterations trip the service engine soon light. In this instance the replacement of the exhaust gas oxygen sensor will not remedy MIL issues. If so, you need to wire up oxygen sensor simulator to the lambda probe(s)' harness in order to get rid of Electronic Control Unit limp mode causes the bike run inefficiently spoiling both performance capability and fuel consumption.

Motorcycle Oxygen sensors are recommended to be replaced after each 30.000 miles - 48.000 km.

Good to know that Bosch invented the air fuel sensor and it is first choice for exhaust gas oxygen sensors throughout the world. An annual production of around 38 million exhaust o2 sensors impressively demonstrates the high quality and skill delivered by Bosch. It therefore comes as no surprise that most Customers riding Piaggio MP3 250 ie. preferably choose a Bosch lambda sensor when replacement interval passed.

All Bosch exhaust o2 sensors come with special features. Double laser-welded stainless steel body protects the sensor against contamination. Pre-coated threads with anti-seize compound guarantees easy install and removal at any time. If original exhaust gas oxygen sensors are worn on your Piaggio MP3 250 ie. or deliver slow signal, you can save up to 10% a year in gasoline costs! Check your exhaust o2 sensor frequently on your Piaggio MP3 250 ie. and replace them with every second tune-up to improve motorcycle power capability and reduce harmful exhaust emissions.

Packing List

1 x Genuine Bosch Oxygen sensor

4 x Bullet Terminal

1 x Installation Instructions

Oxygen sensors are used to reduce vehicle emissions, by ensuring that engines burn their fuel efficiently and cleanly. Robert Bosch GmbH introduced the first automotive lambda probe in 1976. The sensors were introduced in the US from about 1980, and were required on all models of cars in many countries in Europe in 1993. By measuring the proportion of oxygen in the remaining exhaust gas, and by knowing the volume and temperature of the air entering the cylinders amongst other things, an ECU can use look-up tables to determine the amount of fuel required to burn at the stoichiometric ratio (14.7:1 air:fuel by mass for gasoline) to ensure complete combustion. When an internal combustion engine is under high load (such as when using wide-open throttle) the oxygen sensor no longer operates, and the engine automatically enriches the mixture to both increase power and protect the engine.

Internal Design

The sensor element is a ceramic cylinder plated inside and out with porous platinum electrodes; the whole assembly is protected by a metal gauze. It operates by measuring the difference in oxygen between the exhaust gas and the external air, and generates a voltage or changes its resistance depending on the difference between the two. The sensors only work effectively when heated to approximately 300°C, so most lambda probes have heating elements encased in the ceramic to bring the ceramic tip up to temperature quickly when the exhaust is cold. The probe typically has four wires attached to it: two for the lambda output, and two for the heater power.

Operation of the Zirconia O2 Sensor

The zirconium dioxide, or zirconia, lambda sensor is based on a solid-state electrochemical fuel cell called the Nernst cell. Its two electrodes provide an output voltage corresponding to the quantity of oxygen in the exhaust relative to that in the atmosphere. An output voltage of 0.2 V (200 mV) DC represents a lean mixture. That is one where the amount of oxygen entering the cylinder is sufficient to fully oxidize the carbon monoxide (CO), produced in burning the air and fuel, into carbon dioxide (CO2). A reading of 0.8 V (800 mV) DC represents a rich mixture, one which is high in unburned fuel and low in remaining oxygen. The ideal point is 0.45 V (450 mV) DC; this is where the quantities of air and fuel are in the optimum ratio, called the stoichiometric point, and the exhaust output will mainly consist of fully oxidized CO2. The voltage produced by the sensor is so nonlinear with respect to oxygen concentration that it is impractical for the electronic control unit (ECU) to measure intermediate values - it merely registers "lean" or "rich", and adjusts the fuel/air mixture to keep the output of the sensor alternating equally between these two values. This type of sensor is called 'narrow band', referring to the narrow range of fuel/air ratios to which the sensor responds. The main disadvantage of narrow band sensors is their slow response: the control unit determines the exhaust gas composition by averaging the high and low swings in the sensor's output, and this process creates an inevitable delay Not quite sure this oxygen sensor fits your motorcycle? Feel free to contact our Tech Support. 7 trained Magnum representatives are looking forward to respond to your inquiry.

Please read instructions before installation.

REQUIRED SKILL LEVEL: Basic Skill Required REQUIRED TOOLING: Basic Hand Tools Required ESTIMATED TIME OF INSTALLATION: up to 60 Minutes This Bosch oxygen sensor installs universal. You need to cut the harness of existing sensor and establish connections on wires across motorcycle harness and new sensor wires, with shielded bullet connectors or soldering. Setup can be conducted in less than 60 minutes by a mechanical minded installer being slightly inclined with electronics.

Disconnect old oxygen sensor connector from motorcycle harness using extra care not to damage connector, as it must be re-used.

Remove old sensor from exhaust using an O2 sensor socket or 22mm wrench. Place the old and new oxygen sensors side by side on a flat surface, preparing to make an accurate cut of the lead wires. Cut the lead wire(s) to a length that when the plug end is spliced to the new universal sensor, the overall length will be the same or slightly longer than the old sensor.

Stagger-cut wire lead(s) stripping off approx. 1/4” of insulation from the end of each wire. For steps #4 and #5 please refer to the Manufacture Wire Colors image to determine proper wire matching of universal sensor lead(s) to connector lead(s) for each specific application (heater wires are not polarity dependant).A) On universal sensors where heat-shrink tube(s) are already installed: insert just striped portion of wire(s) into crimp terminals of new sensor and crimp terminals. B) On universal sensors where heat-shrink tube(s) are not installed: insert just striped portion of wire(s) into crimp type "butt" connectors (approx. 1/4”) and crimp.

After all connections have been made, slip the heat shrink tube over the crimped connections and heat the tube with an appropriate heat source until the connection is completely sealed, taking care not to over-heat or burn tubing see image.

Remove protector cap just prior to installation A) Flanged applications-(where flange is not already installed on sensor) Install flange to exhaust manifold first, then mount sensor in flange (a copper gasket is bonded to the flange no additional gasket is required) B) Flanged applications- (where flange is already installed on sensor) it is important to use the supplied gasket before installing sensor).

Heavy exhaust modifications like decats, catless exhaust systems or headers trigger check engine light. In this instance the replacement of the oxygen sensor will not sort out CEL/MIL issues. If so, you need to wire up oxygen sensor simulator in order to get rid of ECU safe mode causes the engine run inefficiently spoiling both power and fuel efficiency.

This Bosch oxygen sensor installs universal.You need to cut the harness of existing sensor and establish connections on wires across motorcycle harness and new sensor wires, with shielded bullet connectors or soldering. Setup can be conducted in less than 60 minutes by a mechanical minded installer being slightly inclined with electronics.

exactly the same as what I removed

Bosch is one of the OE suppliers for BMW bike O2 sensors. This o2 sensor is exactly the same as what I removed from my K1200R, except that it didn't have the BMW logo didn’t have to OE connector and the price that goes along with that. Easy to remove and replace about 20 minutes. This was installed on a 2008 BMW K1200R. Would buy again. Awesome customer support when you are in need of.

totally satisfied

After my old o2 sensor failed in my Griso I bought two of these puppies at a price that other web sites charge for 1. 3-day delivery for free. Within an hour of receiving them my bike was back in action. I am totally satisfied and happy customer. Bosch and magnum a good combination.

This bosch o2 sensor fits like factory in my 1190. Works well for the fracture of the price. Although you need to crimp the connectors, it's a piece of cake, harness length is the same as original. What more could you want out of an o2 sensor?

throttle response from the engine was noticeably better

Finally got to ride my bike with the new oxygen sensors fitted. Didn't seem to make much difference at first but after a while the throttle response from the engine was noticeably better. Great deal for the price. As good as any direct fit OEM, but for lot less.

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Piaggio MP3 250 ie.

Your Piaggio MP3 250 ie. will be much better with this O2 sensor instantly when you put Motorcycle Bosch Oxygen Sensor on your Bike. The entire installation of Piaggio lambda probe on your MP3 250 ie. motor takes just a while and can be installed do-it-yourself. This MP3 250 ie. lambda probe will take your Piaggio to a new level regarding fuel economy, driving power /restoring factory engine performance / and fuel efficiency / had been reduced to worn oxygen sensor/. When you feel the need for fuel efficiency / had been reduced to worn oxygen sensor/ you can get it any time with a custom Piaggio O2 sensor installed on the exhaust of your Bike. MP3 250 ie. Motorcycle Bosch Oxygen Sensor tricks the oxygen sensor signal and results instant advantages. The following comment was emailed by Jody, Hi, thanks for shipping it out so quickly. Installed it the same day and looks great, works great. Will do business with again. Mates you gave me 5-star customer support!